siRNA for Akt1

Hi,
I'd like to knock-down Akt1 in my cells, but have no experience in siRNA; therefore I'd like to know whether anyone has successfully used commercial siRNA for Akt, such as those from UBI or from CST ecc...
thank you much for help
Sandra

When Ambion and Dharmacon say when they say they've developed an siRNA against a particular gene, they mean they've put the sequence into their algorithm and had some results spat back out at them, which isn't really the same as having an siRNA already designed. Ordering these may or may not work, depending on how good their algorithms are and whether you trust algorithms!